package cn.chenc.framework.demo.config;


import cn.chenc.framework.security.filter.SecurityJwtAuthenticationTokenFilter;
import cn.chenc.framework.security.handle.AuthenticationEntryPointImpl;
import cn.chenc.framework.security.handle.LogoutSuccessHandlerImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.ProviderManager;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.authentication.configuration.AuthenticationConfiguration;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityCustomizer;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.SecurityFilterChain;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
import org.springframework.security.web.authentication.logout.LogoutFilter;
import org.springframework.web.filter.CorsFilter;

import java.util.Arrays;

/**
 * spring security配置 2.7开始弃用继承WebSecurityConfigurerAdapter
 *
 * @author secret
 */
//@EnableGlobalMethodSecurity(prePostEnabled = true, securedEnabled = true)
@Configuration
@EnableWebSecurity
public class SecurityConfig
{
    /**
     * 自定义用户认证逻辑
     */
    @Autowired
    private UserDetailsService userDetailsService;

    /**
     * 认证失败处理类
     */
    @Autowired
    private AuthenticationEntryPointImpl unauthorizedHandler;

    /**
     * 退出处理类
     */
    @Autowired
    private LogoutSuccessHandlerImpl logoutSuccessHandler;


    /**
     * 跨域过滤器
     */
    @Autowired
    private CorsFilter corsFilter;

    /**
     * token认证过滤器
     * @return
     */
    @Bean
    public SecurityJwtAuthenticationTokenFilter authenticationTokenFilter(){
        return new SecurityJwtAuthenticationTokenFilter();
    }

    /**
     * 解决 无法直接注入 AuthenticationManager --springboot 2.7以前
     * 2.7开始自动注入
     * @return
     * @throws Exception
     */
    @Bean
//    @Override
    public AuthenticationManager authenticationManagerBean(AuthenticationConfiguration authenticationConfiguration) throws Exception
    {
        return authenticationConfiguration.getAuthenticationManager();
    }

    /**
     * anyRequest          |   匹配所有请求路径
     * access              |   SpringEl表达式结果为true时可以访问
     * anonymous           |   匿名可以访问
     * denyAll             |   用户不能访问
     * fullyAuthenticated  |   用户完全认证可以访问（非remember-me下自动登录）
     * hasAnyAuthority     |   如果有参数，参数表示权限，则其中任何一个权限可以访问
     * hasAnyRole          |   如果有参数，参数表示角色，则其中任何一个角色可以访问
     * hasAuthority        |   如果有参数，参数表示权限，则其权限可以访问
     * hasIpAddress        |   如果有参数，参数表示IP地址，如果用户IP和参数匹配，则可以访问
     * hasRole             |   如果有参数，参数表示角色，则其角色可以访问
     * permitAll           |   用户可以任意访问
     * rememberMe          |   允许通过remember-me登录的用户访问
     * authenticated       |   用户登录后可访问
     */
//    @Override
    @Bean
    protected SecurityFilterChain filterChain(HttpSecurity httpSecurity) throws Exception {
        httpSecurity
                // CSRF禁用，因为不使用session
                .csrf(csrf -> csrf.disable())
                // 认证失败处理类
                .exceptionHandling(exception -> exception.authenticationEntryPoint(unauthorizedHandler))
                // 基于token，所以不需要session
                .sessionManagement(session -> session.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
                // 过滤请求 2.7之后authorizeRequests替换为authorizeHttpRequests
                .authorizeHttpRequests(authorizeHttpRequests -> authorizeHttpRequests
                        // 对于登录login 验证码captchaImage 允许匿名访问
                        //2.7开始antMatchers替换为requestMatchers
                        .requestMatchers("/login", "/captchaImage").anonymous()
                        .requestMatchers(
                                HttpMethod.GET,
                                "/*.html",
                                "/**/*.html",
                                "/**/*.css",
                                "/**/*.js").permitAll()
                .requestMatchers("/profile/**").anonymous()
                .requestMatchers("/common/download**").anonymous()
                .requestMatchers("/common/download/resource**").anonymous()
                .requestMatchers("/swagger-ui.html").anonymous()
                .requestMatchers("/swagger-resources/**").anonymous()
                .requestMatchers("/webjars/**").anonymous()
                .requestMatchers("/*/api-docs").anonymous()
                .requestMatchers("/druid/**").anonymous()
                // 除上面外的所有请求全部需要鉴权认证
                .anyRequest().authenticated())
                .headers(headers -> headers.frameOptions(frameOptionsConfig -> frameOptionsConfig.disable()));
        //退出登录处理
        httpSecurity.logout(logout -> logout.logoutUrl("/logout").logoutSuccessHandler(logoutSuccessHandler));
        // 添加JWT filter
        httpSecurity.addFilterBefore(authenticationTokenFilter(), UsernamePasswordAuthenticationFilter.class);
        // 添加CORS filter
        httpSecurity.addFilterBefore(corsFilter, SecurityJwtAuthenticationTokenFilter.class);
        httpSecurity.addFilterBefore(corsFilter, LogoutFilter.class);
        // 添加userDetailService
        httpSecurity.userDetailsService(userDetailsService);
        return httpSecurity.build();
    }

//    @Bean
//    public WebSecurityCustomizer webSecurityCustomizer() {
//        return (web) -> web.ignoring().requestMatchers("/ignore1", "/ignore2").anyRequest();
//    }


    /**
     * 强散列哈希加密实现
     * 2.7之后直接创建passwordEncoder的bean,不需要加{bcrtpt}
     */
    @Bean
    public PasswordEncoder passwordEncoder()
    {
        return new BCryptPasswordEncoder();
    }

    /**
     * 身份认证接口
     * 2.7之后弃用
     */
//    @Override
//    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
//        auth.userDetailsService(userDetailsService).passwordEncoder(bCryptPasswordEncoder());
//    }
}
